The U.S. Navy issued a bulletin announcing that the widely used social app TikTok is now seen as a cybersecurity threat and will no longer be allowed on any government-supplied devices. Reuters reported that the bulletin, posted on a Facebook page used by military personnel, warned government members that any device with the TikTok app installed would be blocked from the Navy Marine Corps Intranet. TikTok is a highly popular video-sharing app owned by the Beijing company ByteDance, which is currently under a U.S. national security review. The Navy is the second U.S. military branch to flag TikTok after Army leadership instructed cadets not to use the app last month.